Initial Observation Use your senses to observe -be objective (measure), not subjective (opinions) –See, hear, touch, taste, smell, etc. Can also use tools to measure (label numbers) –Temperature, length, volume, etc.
Which is the better observation? It is 58 o F in the room. It is cool in the room. The iguana likes lettuce. The iguana consumed 90% of the lettuce. The bacteria is yucky. The bacteria has a slimy appearance and smells of sulfur.
State the Question “What is the effect of _____ on ____.”
Hypothesis “If…then…” If producing oxygen bubbles in photosynthesis is related to light color, then green light will increase photosynthesis oxygen bubbles to form. Dependent variable Independent variable prediction
Hypothesis 1. Must be testable – some way to check its validity 2. Must be falsifiable – must be some experiment that could show that it is not true (may not prove to be false, just have to be able to test that)
Can you test these to be falsifiable? 1. Animals are better than plants. 2. The average tree height on the HS campus is the same as on the MS campus. 3. How many angels does it take to dance on the head of a pin? 4.